Sympathetic nerve fibers that innervate blood vessel walls are found primarily in the
A. tunica intima.
B. tunica media.
C. tunica adventitia.
D. tunica externa.
E. tunica interna.
B
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Which of the drug treatments listed below is INCORRECTLY matched to a mode of action in treating hypertension?
A. Calcium channel blockers-reduce speed and force of contraction in vascular smooth muscle B. Alpha-adrenergic receptor blockers-reduce TPR by decreased stimulation of arteriolar smooth muscle C. Angiotensin-converting enzyme (ACE) inhibitors-reduce TPR by reducing angiotensin II concentrations D. Antagonists of parasympathetic receptors-reduce TPR by decreased stimulation of arteriolar smooth muscle E. ACE inhibitors-lowers peripheral resistance by promoting vasodilation F. Diuretics-reduce blood volume by increasing excretion of sodium and water in urine G. Beta-adrenergic receptor antagonists-reduce cardiac output by slowing heart rate and reducing contractility
Which of the following is a function of the efferent division of the nervous system?
A) providing sensation of the internal and external environments B) integrating sensory information C) coordinating voluntary and involuntary activities D) sending signals to muscles E) regulating or controlling peripheral structures and systems
The region of the kidney containing the renal pyramids, renal columns, and interlobar arteries is called the __________.
renal cortex renal medulla renal pelvis renal functional unit
Descent of the testes is stimulated by the ________
A) presence of the X chromosome B) presence of estrogens C) presence of testosterone D) presence of Y chromosome E) absence of the X chromosome